棣栧厛錛屽綋涓涓?JVM 鍚姩鐨勬椂鍊欙紝Java 緙虹渷寮濮嬩嬌鐢ㄤ笁涓被瑁呭叆鍣ㄣ傚畠浠垎鍒槸錛?/p>
瀹冧滑鍒嗗埆瀹炵幇濡備笅鐨勫姛鑳斤細
<Java_Runtime_Home>/lib 涓嬮潰鐨勭被搴撳姞杞藉埌鍐呭瓨涓?
< Java_Runtime_Home >/lib/ext 鎴栬呯敱緋葷粺鍙橀噺 java.ext.dir 鎸囧畾浣嶇疆涓殑綾誨簱鍔犺澆鍒板唴瀛樹腑銆?
褰撳簲鐢ㄧ▼搴忛渶瑕佸姞杞芥煇涓被鍒板唴瀛樹腑鐨勬椂鍊欙紝綾昏鍏ュ櫒鏄浣曞伐浣滅殑鍛紵榪欏氨璁捐鍒扮被瑁呭叆鍣ㄧ殑涓涓噸瑕佹柟闈細浠ｇ悊鏈哄埗銆傛瘡涓涓被瑁呭叆鍣紝闄や簡寮曞綾昏鍏ュ櫒浠ュ錛岄兘鏈変竴涓埗綾昏鍏ュ櫒銆傚浜庣郴緇熺己鐪佸畾涔夌殑涓変釜綾昏鍏ュ櫒錛屽紩瀵肩被瑁呭叆鍣ㄦ槸鎵╁睍綾昏鍏ュ櫒鐨勭埗綾昏鍏ュ櫒錛岃屾墿灞曠被瑁呭叆鍣ㄦ槸緋葷粺綾昏鍏ュ櫒鐨勭埗綾昏鍏ュ櫒銆傚綋鐒訛紝搴旂敤紼嬪簭涔熷彲浠ヤ嬌鐢ㄨ嚜宸辯殑綾昏鍏ュ櫒鏉ヤ嬌鐢ㄧ壒瀹氱殑鏂規硶鏉ヨ杞界被錛屽洜姝わ紝鏁翠釜緋葷粺涓殑綾昏鍏ュ櫒灝卞艦鎴愪竴涓爲鐘剁粨鏋勩?/p>
褰撲嬌鐢ㄦ煇涓被瑁呭叆鍣ㄦ潵璇曞浘瑁呰澆鏌愪釜綾葷殑鏃跺欙紝璇ョ被瑁呭叆鍣ㄤ細棣栧厛浣跨敤鍏剁埗綾昏鍏ュ櫒鏉ヨ瘯鍥捐杞借綾匯傚浜庢瘡涓涓杞借繘鏉ョ殑綾伙紝JVM 閮戒細緇欏叾鍒嗛厤涓涓敮涓鐨?ID銆傚洜姝わ紝涓嶅悓綾昏鍏ュ櫒鍙互瑁呰澆鍚屼竴涓被鍒?JVM 涓備緥濡傦紝瀵逛簬濡備笅鍥劇粨鏋勭殑 ClassLoaderA 鍜?ClassLoaderB錛?/p>
鍥?1 綾昏鍏ュ櫒鐨勭粨鏋?/strong>
鍋囪綾?C 鍦ㄧ郴緇熺被瑁呭叆鍣ㄦ寚瀹氱殑綾昏礬寰勪腑錛屽垯鏃犺鏄嬌鐢?ClassLoaderA 榪樻槸浣跨敤 ClassLoaderB錛岄兘鍙細寰楀埌鍚屾牱涓涓被 C銆?/p>
浣嗘槸濡傛灉綾?C 鍒嗗埆鍦?ClassLoaderA 浠ュ強 ClassLoaderB 鎸囧畾鐨勭被搴撲腑錛屽垯浣跨敤 ClassLoaderA 寰楀埌鍒扮被 C 瀹炰緥浼氫笉鍚屼簬 ClassLoaderB 寰楀埌鐨勭被 C 瀹炰緥銆傚敖綆′袱涓被瑁呭叆鍣ㄥ湪鍚屼竴涓?JVM 涓?/p>
涓婇潰鐨勭被瑁呭叆鍣ㄧ殑鍚戜笂浠ｇ悊緇撴瀯鐪嬩笂鍘誨緢瀹岀編浜嗭紝浣嗘槸錛屽綋緋葷粺鍙樺緱澶嶆潅鐨勬椂鍊欙紝灝辮繕鏄樉寰椾笉澶熺敤浜嗐?/p>
渚嬪錛屽綋 Java 寮曞叆浜?JNDI 浠ュ悗錛孞NDI 鏍稿績閮ㄥ垎鏄氳繃寮曞 綾昏鍏ュ櫒鍦?JVM 鍚姩鐨勬椂鍊欒杞借繘鍏?JVM 鐨勩傝?JDNI 鏍稿績閮ㄥ垎鏄氳繃閰嶇疆淇℃伅鏉ュ湪榪愯鏃跺欒杞藉畾涔夊湪鐢ㄦ埛鐨勭被璺緞涓殑鐗瑰畾綾繪潵瀹屾垚鐗瑰畾闇瑕併傝岃繖鏄笂闈㈠畾涔夌殑綾昏鍏ュ櫒鐨勫悜涓婁唬鐞嗘ā寮忔墍涓嶈兘鏀寔鐨勩?/p>
涓轟簡瑙ｅ喅榪欎釜闂錛孞ava 2 涓紩鍏ヤ簡綰跨▼涓婁笅鏂囷紙Thread Content錛夌被瑁呭叆鍣ㄧ殑姒傚康錛屾瘡涓涓嚎紼嬫湁涓涓?Context 綾昏鍏ュ櫒銆傝繖涓?Context 綾昏鍏ュ櫒鏄氳繃鏂規硶 Thread.setContextClassLoader() 璁劇疆鐨勶紝濡傛灉褰撳墠綰跨▼鍦ㄥ垱寤哄悗娌℃湁璋冪敤榪欎釜鏂規硶璁劇疆 Context 綾昏鍏ュ櫒錛屽垯褰撳墠綰跨▼浠庝粬鐨勭埗綰跨▼緇ф壙 Context 綾昏鍏ュ櫒銆傚鏋滄暣涓簲鐢ㄩ兘娌℃湁璁劇疆 Context 綾昏鍏ュ櫒錛屽垯緋葷粺綾昏鍏ュ櫒琚緗負鎵鏈夌嚎紼嬬殑 Context 綾昏鍏ュ櫒銆?/p>
瀵逛簬鎴戜滑涓婇潰鎵璇?JNDI 鐨勬儏鍐碉紝寮曞 綾昏鍏ュ櫒瑁呰澆榪涘叆鐨?JNDI 鏍稿績綾諱細浣跨敤 Context 綾昏鍏ュ櫒鏉ヨ杞藉叾鎵闇瑕佺殑 JNDI 瀹炵幇綾伙紝鑰屼笉鏄皢璇ヨ杞戒換鍔′唬鐞嗙粰鍏剁埗綾昏鍏ュ櫒鏉ュ畬鎴愩傝繖鏍鳳紝灝辮В鍐充簡涓婇潰鐨勯棶棰樸傚彲浠ヨ涓?Context 綾昏鍏ュ櫒鍦ㄤ紶緇熺殑 Java 鍚戜笂浠ｇ悊鏈哄埗涓婃墦寮浜嗕竴涓悗闂ㄣ侰ontext 綾昏鍏ュ櫒鍦?J2EE 涓嬌鐢ㄧ殑寰堝箍娉涳紝姣斿 Java 鍛藉悕鏈嶅姟錛圝NDI錛夛紝Java API for XML Parsing(JAXP)錛堟敞錛氬湪 Java1.4 涓?JAXP 鎵嶄綔涓?Java 鐨勬牳蹇冪被鐨勪竴閮ㄥ垎錛屽畠鎵嶅紑濮嬩嬌鐢?Context 綾昏鍏ュ櫒鏉ュ姞杞戒笉鍚岀殑瀹炵幇綾伙級絳夈?/p>
綆鍗曡岃█錛孞ava 涓殑綾昏鍏ュ櫒灝辨槸涓婇潰鍑犵錛屼絾鏄紝鍦ㄥ叿浣撲嬌鐢ㄤ腑錛岃繕鏄湁寰堝鍙樺寲錛屾垜浠笅闈㈠垎鍒浜庝竴浜涙儏鍐佃繘琛岃鏄庛?/p>
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涓嶈繃DRL涓婇珮浜哄澶氾紝鏈変漢緇欐敮浜嗚繖鎷涳細
鍦╝bout:config涓?/p>
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2.淇敼browser.sessionhistory.max_total_viewers淇敼鍊間負5鎴栨洿灝弡欏甸潰蹇繘/蹇鍔熻兘涓繚瀛樼殑欏甸潰鎬繪暟錛岄粯璁ゆ槸-1(鏃犻檺)}銆?
璧剁揣璇曚簡涓涓嬶紝涔栦箹錛屽悓鏍風殑欏甸潰錛屽崰鐢ㄥ唴瀹瑰彧鏈?0鍏嗗乏鍙充簡錛岃屼笖鍦ㄦ渶灝忓寲鐨勬椂鍊欏崰鐢ㄥ彧鏈?鍏嗐?/p>
澶埥浜嗭紝濂戒笢瑗夸笉鏁㈢嫭浜紝鏈夊悓鏍風儲鎭肩殑鏈嬪弸涓嶅Θ涓璇曘?/p>
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浣滆協bysss
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blog:blog.csdn.net/fbysss
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鍏抽敭瀛楋細涔辯爜
鏂囦歡1錛歟ncode.jsp
<%@ page language="java" contentType="text/html; charset=GBK"
聽聽聽 pageEncoding="GBK"%>
<%
聽聽聽 String sFileName = "涓枃鏂囦歡鍚?doc";
聽聽 sFileName = java.net.URLEncoder.encode(sFileName);//浠ｇ爜琛?
%>
聽<a href="javascript:decode('<%=sFileName%>');">decode</a>
<html>
<meta http-equiv="Content-Type" content="text/html; charset=gbk" />
<body>
<script language="javascript">
function聽聽聽 decode(filename){
聽聽 location.href="decode.jsp?filename="+filename;//浠ｇ爜琛?
}
</script>
</body>
</html>
鏂囦歡2錛歞ecode.jsp
<%@ page language="java" contentType="text/html; charset=gbk"
聽聽聽 pageEncoding="gbk"%>
<%
聽聽聽 String sFileName = request.getParameter("filename");
聽sFileName = java.net.URLDecoder.decode(sFileName,"GBK");//浠ｇ爜琛?
聽聽聽聽聽out.println("filename:"+sFileName);
%>
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鐢ㄩ紶鏍囩Щ鍔ㄥ埌閾炬帴涓婃柟鏃訛紝鍙互鐪嬪埌IE鐘舵佹爮涓婄殑紜槸姝ｇ‘鐨勭紪鐮侊紝鍗?%D6%D0%CE%C4%CE%C4%BC%FE%C3%FB.doc"
鐒惰岃娉ㄦ剰鐨勬槸錛氱敤榧犳爣鍙抽敭鐐瑰嚮閾炬帴-銆夊睘鎬х湅鍒扮殑URL鏄痡avascript:decode('脰脨脦脛脦脛錄鎂脙沒.doc');鍚庢灉鍙兂鑰岀煡錛岃漿鍚戝悗杈撳嚭鐨勬槸涔辯爜銆?br />聽聽聽聽聽聽 寮勪簡鍗婂ぉ錛岃漿UTF-8涔熸槸涓鏍鳳紝涓涓皬闂鏁寸殑寰堥儊闂鳳紝鏈鍚庢兂鍒幫紝榪樺緱鍦╦s榪欓噷涓嬫墜銆?br />聽聽聽聽聽聽 鎶奺ncode.jsp浠ｇ爜琛?娉ㄩ噴鎺夛紝浠ｇ爜琛?鍓嶉潰鍔犲叆涓琛岋細filename = encodeURI(filename);
鐪嬪埌涓鐐硅繘灞曪細杞悜鍚庣殑url宸茬粡寰堣鑼冧簡錛歠ilename=%E4%B8%AD%E6%96%87%E6%96%87%E4%BB%B6%E5%90%8D.doc錛屼絾鏄粨鏋滀粛鐒舵槸涔辯爜銆備負鍟ュ憿錛熸敞鎰忚瀵燂紝鍓嶉潰鐨勭紪鐮佸拰鍚庨潰鏄笉涓鏍風殑錛?br />鐒惰岋紝javascript鐨凟ncodeURI娌℃湁鎻愪緵緙栫爜鍙傛暟,榛樼劧灝辨槸UTF-8.聽 濂斤紝閭ｄ箞聽sFileName = java.net.URLDecoder.decode(sFileName,"UTF-8");琛屼笉琛屽憿錛熺瓟妗堟槸錛氫笉琛岋紝鍘熷洜鎴戠幇鍦ㄨ繕娌℃壘鍒幫紝鎵懼埌浜嗕細鍦ㄦ琛ュ厖錛屽鏋滃摢浣嶇煡閬擄紝榪樻湜鎸囩偣銆?br />瑙ｅ喅鍔炴硶錛氭妸浠ｇ爜琛?鏇挎崲鎴?br />sFileName=聽new String(sFileName.getBytes("ISO-8859-1"), "UTF-8");
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鍦╦s涓敤decodeURI瑙ｇ爜xText = decodeURI(xText);